ASTROSAT CZTI

Data Quality Report

Orbit 22925

Creation date: 2024-06-27T18:47:36.588920
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_170T01_9000003388_22925cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22925cztM0_level2_quad_clean.evt
Size (bytes)475,404,48098,375,040
Size453.4 MB 93.8 MB
Events in quadrant A3,119,864640,713
Events in quadrant B3,269,671659,363
Events in quadrant C3,285,195626,146
Events in quadrant D4,276,574594,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134512
B0138062
C0137554
D0171302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565140.213252%
B6565240.365575%
C6564530.807434%
D65641942.955515%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7729 6565 0 0 0.00% 0.00%
B 7729 6565 1 1 0.01% 0.02%
C 7728 6564 1 1 0.01% 0.02%
D 7728 6564 138 138 1.79% 2.10%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 11823 67.93 809 793 162.4
A 0 226 6963 38.0 809 793 162.4
A 3 137 6852 37.31 809 793 162.4
B 0 190 29717 187.93 816 795 153.9
B 12 111 18255 113.45 816 795 153.9
B 3 64 17719 109.97 816 795 153.9
C 14 238 125849 684.75 786 792 182.6
C 6 80 66802 361.44 786 792 182.6
C 8 208 11239 57.2 786 792 182.6
D 1 52 919177 4871.21 777 754 188.5
D 13 153 190900 1008.51 777 754 188.5
D 12 233 137016 722.72 777 754 188.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter